memcached的配置和spymemcached的使用笔记

来源：互联网发布：mac分段压缩文件编辑：程序博客网时间：2024/06/05 22:09

软件的版本：memcached是1.4.25，spymemcached是2.8.4，jdk1.6.0_45（64位）。

1.安装memcached
2.使用spymemcached测试
3.查阅memcached运行状态

1.安装memcached

下载memcached-1.4.25.tar.gz放在/opt目录下面，从解压开始：

# 解压文件[root@localhost opt]# tar -zxvf memcached-1.4.251.tar.gzmemcached-1.4.25/memcached-1.4.25/aclocal.m4memcached-1.4.25/assoc.c# (中间省略)[root@localhost opt]# cd memcached-1.4.25/# 进行配置，检查当前的环境是否满足要安装软件的依赖关系[root@localhost memcached-1.4.25]# ./configurechecking build system type… x86_64-unknown-linux-gnuchecking host system type… x86_64-unknown-linux-gnuchecking for a BSD-compatible install… /usr/bin/install -cchecking whether build environment is sane… yeschecking for a thread-safe mkdir -p… /bin/mkdir -pchecking for gawk… gawkchecking whether make sets $(MAKE)… yeschecking whether make supports nested variables… yeschecking for gcc… nochecking for cc… nochecking for cl.exe… noconfigure: error: in `/opt/memcached-1.4.25′:configure: error: no acceptable C compiler found in $PATHSee `config.log’ for more details# 提示说缺少gcc，马上装[root@localhost memcached-1.4.25]#yum -y install gcc# 下面是按照官网的步骤执行[root@localhost memcached-1.4.25]# ./configure[root@localhost memcached-1.4.25]# make[root@localhost memcached-1.4.25]# make test[root@localhost memcached-1.4.25]# sudo make install# 启动memcached# -m：设置内存大小(默认是m；-l：设置监听Ip地址；-p：监听端口；-u：以root用户执行[root@localhost ~]# memcached -m 64 -l 192.168.1.100 -p 11211-u root

2.使用spymemcached测试

public class SpyMemcachedServer {    private String ip;    private int port;    public void setIp(String ip) {        this.ip = ip;    }    public String getIp() {        return ip;    }    public void setPort(int port) {        if (port < 0 || port > 65535) {            throw new IllegalArgumentException("Port number must be between 0 to 65535");        }        this.port = port;    }    public int getPort() {        return port;    }    public String toString() {        return getIp() + ":" + getPort();    }}

import java.util.concurrent.TimeUnit;public interface SpyMemcachedConstants {    public static int DEFAULT_TIMEOUT = 5;    public static TimeUnit DEFAULT_TIMEUNIT = TimeUnit.SECONDS;}

import java.io.IOException;import java.net.SocketAddress;import java.util.ArrayList;import java.util.Iterator;import java.util.List;import java.util.Map;import java.util.Set;import junit.framework.TestCase;import net.spy.memcached.ConnectionObserver;import net.spy.memcached.transcoders.Transcoder;public class SpyMemcachedTest extends TestCase {    private SpyMemcachedManager manager;    protected void setUp() throws Exception {        super.setUp();        String[][] servs = new String[][] { { "192.168.1.100", "11211" },        // {"localhost", "11212"}        };        List<SpyMemcachedServer> servers = new ArrayList<SpyMemcachedServer>();        for (int i = 0; i < servs.length; i++) {            SpyMemcachedServer server = new SpyMemcachedServer();            server.setIp(servs[i][0]);            server.setPort(Integer.parseInt(servs[i][1]));            servers.add(server);        }        manager = new SpyMemcachedManager(servers);        manager.connect();        addObserver();    }    protected void tearDown() throws Exception {        super.tearDown();        manager.disConnect();    }    public void testSet() {        System.out.println("====TestSet====");        for (int i = 0; i < 10; i++) {            String key = "key" + i;            String value = "value" + i;            manager.set(key, value, 20);        }    }    public void testGet() {        System.out.println("====TestGet====");        for (int i = 0; i < 10; i++) {            String key = "key" + i;            Object value = manager.get(key);            if (value != null) {                System.out.println("From memcached");                System.out.println("key=" + key + ";value=" + value);            } else {                System.out.println("Not found");                System.out.println("key=" + key + ";value=" + value);            }        }    }    public void testAdd() {        System.out.println("====TestAdd====");        boolean flag = manager.add("key1", "value1-added", 20); // exist        assertEquals(false, flag);        flag = manager.add("key100", "value100", 20); // don't exist        assertEquals(true, flag);        testGet();    }    public void testReplace() {        System.out.println("====TestReplace====");        boolean flag = manager.replace("key2", "value2-replaced", 20);        assertEquals(true, flag);        flag = manager.replace("key1000", "value1000", 20);        assertEquals(false, flag);        testGet();    }    public void testDelete() {        System.out.println("====TestDelete====");        boolean flag = manager.delete("key3");        assertEquals(true, flag);        flag = manager.delete("key1000");        assertEquals(false, flag);        testGet();    }    public void testAsyncGet() {        System.out.println("====TestAsyncGet====");        Object value = manager.asyncGet("key4");        if (value != null) {            assertEquals("value4", (String) value);        }        System.out.println("value=" + value);    }    public void testGetMulti() {        System.out.println("====TestGetMulti====");        List<String> keys = new ArrayList<String>();        String[] strKeys = new String[5];        for (int i = 0; i < 5; i++) {            keys.add("key" + i);            strKeys[i] = "key" + i;        }        Map<String, Object> cache = manager.getMulti(keys);        printMap(cache);        cache = manager.getMulti(keys);        printMap(cache);    }    public void testAsyncGetMulti() {        System.out.println("====TestAsyncGetMulti====");        List<String> keys = new ArrayList<String>();        String[] strKeys = new String[5];        for (int i = 0; i < 5; i++) {            keys.add("key" + i);            strKeys[i] = "key" + i;        }        Map<String, Object> cache = manager.asyncGetMulti(keys);        printMap(cache);        cache = manager.asyncGetMulti(keys);        printMap(cache);    }    public void testIncrAndDecr() {        System.out.println("====TestIncrAndDecr====");        long l = -1;        l = manager.increment("incr", 2, 100, 60);        assertEquals(100, l);        l = manager.increment("incr", 4);        assertEquals(104, l);        l = manager.decrement("decr", 4, 100, 60);        assertEquals(100, l);        l = manager.decrement("decr", 3);        assertEquals(97, l);        System.out.println("incr=" + manager.get("incr").toString());        System.out.println("decr=" + manager.get("decr").toString());    }    public void testAsyncIncrAndDecr() {        System.out.println("====TestAsyncIncrAndDecr====");        long l = -1;        l = manager.asyncIncrement("incr", 2);        assertEquals(106, l);        l = manager.asyncDecrement("decr", 4);        assertEquals(93, l);        System.out.println("aincr=" + manager.get("incr").toString());        System.out.println("adecr=" + manager.get("decr").toString());    }    public void testPrintStat() throws IOException {        System.out.println("====TestPrintStat====");        manager.printStats();    }    private void addObserver() {        // System.out.println("====AddObserver====");        ConnectionObserver obs = new ConnectionObserver() {            public void connectionEstablished(SocketAddress sa,                    int reconnectCount) {                System.out.println("Established " + sa.toString());            }            public void connectionLost(SocketAddress sa) {                System.out.println("Lost " + sa.toString());            }        };        manager.addObserver(obs);    }    public void testGetTranscoder() {        System.out.println("====TestGetTranscoder====");        Transcoder tran = manager.getTranscoder();        System.out.println(tran.getClass().toString());    }    private void printMap(Map map) {        StringBuffer temp = new StringBuffer();        Set set = map.keySet();        Iterator iter = set.iterator();        while (iter.hasNext()) {            String key = (String) iter.next();            Object value = map.get(key);            temp.append("key=" + key + ";value=" + value + "\r\n");        }        System.out.println(temp.toString());    }}

#测试前，先停止防火墙[root@localhost ~]# service iptables stop

# 执行测试例子（截取部分的信息）2016-02-05 20:03:42.477 INFO net.spy.memcached.MemcachedConnection: Added {QA sa=/192.168.1.100:11211, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} to connect queue====TestSet====2016-02-05 20:03:42.481 INFO net.spy.memcached.MemcachedConnection: Connection state changed for sun.nio.ch.SelectionKeyImpl@44bd928aEstablished /192.168.1.100:112112016-02-05 20:03:42.498 INFO net.spy.memcached.MemcachedConnection: Shut down memcached client2016-02-05 20:03:42.504 INFO net.spy.memcached.MemcachedConnection: Added {QA sa=/192.168.1.100:11211, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} to connect queue====TestGet====Established /192.168.1.100:112112016-02-05 20:03:42.507 INFO net.spy.memcached.MemcachedConnection: Connection state changed for sun.nio.ch.SelectionKeyImpl@1d5a0305From memcachedkey=key0;value=value0From memcachedkey=key1;value=value1From memcachedkey=key2;value=value2From memcachedkey=key3;value=value3From memcachedkey=key4;value=value4From memcached# (省略)

3.查阅memcached运行状态

#因为查阅memcached的运行状态需要用到telnet，而我没有安装telnet，所以先安装telnet-server端和telnet-client端。[root@localhost ~]# yum install telnet-server[root@localhost ~]# yum install telnet# 查阅memcached运行状态：[root@localhost ~]# telnet 192.168.1.100 11211Trying 192.168.1.100…Connected to 192.168.1.100.Escape character is ‘^]’.statsSTAT pid 4828  // memcached服务器的进程IdSTAT uptime 543 // 服务器已经运行的秒数STAT time 1454703156 // 服务器当前的unix时间戳STAT version 1.4.25 // //memcached版本STAT libevent 1.4.13-stable // libevent版本STAT pointer_size 64 // 当前操作系统的指针大小（32位系统一般是32bit，64就是64位操作系统）STAT rusage_user 0.004999 // 进程的累计用户时间STAT rusage_system 0.083987 // 进程的累计系统时间STAT curr_connections 5 // 服务器当前存储的items数量STAT total_connections 18 // 从服务器启动以后存储的items总数量STAT connection_structures 6 // 服务器分配的连接构造数STAT reserved_fds 20STAT cmd_get 65 // get命令（获取）总请求次数STAT cmd_set 16 // set命令（保存）总请求次数STAT cmd_flush 0 // flush命令请求次数STAT cmd_touch 0 // touch命令请求次数STAT get_hits 60 // 总命中次数STAT get_misses 5 // 总未命中次数STAT delete_misses 1 // delete命令未命中次数STAT delete_hits 1 // delete命令命中次数STAT incr_misses 1 // incr命令未命中次数STAT incr_hits 2 // incr命令命中次数STAT decr_misses 1 // decr命令未命中次数STAT decr_hits 2 // decr命令命中次数STAT cas_misses 0 // cas命令未命中次数STAT cas_hits 0 // cas命令命中次数STAT cas_badval 0 // 使用擦拭次数STAT touch_hits 0 // touch命令未命中次数STAT touch_misses 0 // touch命令命中次数STAT auth_cmds 0 // 认证命令处理的次数STAT auth_errors 0 // 认证失败数目STAT bytes_read 1120 // 总读取字节数（请求字节数）STAT bytes_written 3100 // 总发送字节数（结果字节数）STAT limit_maxbytes 67108864 // 分配给memcached的内存大小（字节b，启动memcached服务器配置64m，换算：67108864 b = 65536 kb = 64 m）STAT accepting_conns 1 // 服务器是否达到过最大连接（0/1）STAT listen_disabled_num 0 // 失效的监听数STAT time_in_listen_disabled_us 0STAT threads 4 // 当前线程数STAT conn_yields 0 // 连接操作主动放弃数目STAT hash_power_level 16STAT hash_bytes 524288STAT hash_is_expanding 0STAT malloc_fails 0STAT bytes 908 // 当前存储占用的字节数STAT curr_items 12 // 当前存储的数据总数STAT total_items 14 // 启动以来存储的数据总数STAT expired_unfetched 0STAT evicted_unfetched 0STAT evictions 0 // 为获取空闲内存而删除的items数（分配给memcache的空间用满后需要删除旧的items来得到空间分配给新的items)STAT reclaimed 0 // 已过期的数据条目来存储新数据的数目STAT crawler_reclaimed 0STAT crawler_items_checked 0STAT lrutail_reflocked 0END

–完–

Demo下载

参考：

官方教程:http://www.memcached.org/downloads
memcached 的配置及 spymemcached 客户端简单使用:http://www.cnblogs.com/atio/p/3198230.html
spymemcached源码深入分析:http://my.oschina.net/astute/blog/93492
JAVA MemCache 史无前例的详细讲解！看完包精通MEMCACHE！:http://blog.csdn.net/hjm4702192/article/details/7894080
centos使用yum安装gcc:http://www.oschina.net/code/snippet_54100_10351
memcached之java客户端:spymemcached使用:http://blog.csdn.net/fhd001/article/details/6764038
linux查看memcached状态:http://www.2cto.com/os/201303/193264.html
linux查看memcached状态:http://blog.sina.com.cn/s/blog_6a1fb8420102uz90.html
linux下如何关闭防火墙？如何查看防火墙当前的状态:http://blog.csdn.net/bslzl/article/details/7937899
linux下查看进程和端口:http://blog.chinaunix.net/uid-25510439-id-2981118.html
memcached client – spymemcached使用:http://blog.csdn.net/gtuu0123/article/details/4849905
window的memcached的下载地址： https://commaster.net/content/installing-memcached-windows

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